A method for embedding an entire image, audio or video watermark sequence within another image, audio or video data sequence with minimum loss of data quality is presented. The method exploits the de-correlation property of data coefficients in the orthogonal transform domain, similar to the application...http://www.google.com.tw/patents/US6983057?utm_source=gb-gplus-share專利 US6983057 - Methods for embedding image, audio and video watermarks in digital data
